v4.19.13 snapshot.
diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h
new file mode 100644
index 0000000..3037157
--- /dev/null
+++ b/include/pcmcia/ds.h
@@ -0,0 +1,277 @@
+/*
+ * ds.h -- 16-bit PCMCIA core support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ * (C) 1999 David A. Hinds
+ * (C) 2003 - 2008 Dominik Brodowski
+ */
+
+#ifndef _LINUX_DS_H
+#define _LINUX_DS_H
+
+#ifdef __KERNEL__
+#include <linux/mod_devicetable.h>
+#endif
+
+#include <pcmcia/device_id.h>
+
+#ifdef __KERNEL__
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <pcmcia/ss.h>
+#include <linux/atomic.h>
+
+
+/*
+ * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus
+ * a.k.a. PCI drivers
+ */
+struct pcmcia_socket;
+struct pcmcia_device;
+struct config_t;
+struct net_device;
+
+/* dynamic device IDs for PCMCIA device drivers. See
+ * Documentation/pcmcia/driver.txt for details.
+*/
+struct pcmcia_dynids {
+ struct mutex lock;
+ struct list_head list;
+};
+
+struct pcmcia_driver {
+ const char *name;
+
+ int (*probe) (struct pcmcia_device *dev);
+ void (*remove) (struct pcmcia_device *dev);
+
+ int (*suspend) (struct pcmcia_device *dev);
+ int (*resume) (struct pcmcia_device *dev);
+
+ struct module *owner;
+ const struct pcmcia_device_id *id_table;
+ struct device_driver drv;
+ struct pcmcia_dynids dynids;
+};
+
+/* driver registration */
+int pcmcia_register_driver(struct pcmcia_driver *driver);
+void pcmcia_unregister_driver(struct pcmcia_driver *driver);
+
+/**
+ * module_pcmcia_driver() - Helper macro for registering a pcmcia driver
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for pcmcia drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only use
+ * this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_pcmcia_driver(__pcmcia_driver) \
+ module_driver(__pcmcia_driver, pcmcia_register_driver, \
+ pcmcia_unregister_driver)
+
+/* for struct resource * array embedded in struct pcmcia_device */
+enum {
+ PCMCIA_IOPORT_0,
+ PCMCIA_IOPORT_1,
+ PCMCIA_IOMEM_0,
+ PCMCIA_IOMEM_1,
+ PCMCIA_IOMEM_2,
+ PCMCIA_IOMEM_3,
+ PCMCIA_NUM_RESOURCES,
+};
+
+struct pcmcia_device {
+ /* the socket and the device_no [for multifunction devices]
+ uniquely define a pcmcia_device */
+ struct pcmcia_socket *socket;
+
+ char *devname;
+
+ u8 device_no;
+
+ /* the hardware "function" device; certain subdevices can
+ * share one hardware "function" device. */
+ u8 func;
+ struct config_t *function_config;
+
+ struct list_head socket_device_list;
+
+ /* device setup */
+ unsigned int irq;
+ struct resource *resource[PCMCIA_NUM_RESOURCES];
+ resource_size_t card_addr; /* for the 1st IOMEM resource */
+ unsigned int vpp;
+
+ unsigned int config_flags; /* CONF_ENABLE_ flags below */
+ unsigned int config_base;
+ unsigned int config_index;
+ unsigned int config_regs; /* PRESENT_ flags below */
+ unsigned int io_lines; /* number of I/O lines */
+
+ /* Is the device suspended? */
+ u16 suspended:1;
+
+ /* Flags whether io, irq, win configurations were
+ * requested, and whether the configuration is "locked" */
+ u16 _irq:1;
+ u16 _io:1;
+ u16 _win:4;
+ u16 _locked:1;
+
+ /* Flag whether a "fuzzy" func_id based match is
+ * allowed. */
+ u16 allow_func_id_match:1;
+
+ /* information about this device */
+ u16 has_manf_id:1;
+ u16 has_card_id:1;
+ u16 has_func_id:1;
+
+ u16 reserved:4;
+
+ u8 func_id;
+ u16 manf_id;
+ u16 card_id;
+
+ char *prod_id[4];
+
+ u64 dma_mask;
+ struct device dev;
+
+ /* data private to drivers */
+ void *priv;
+ unsigned int open;
+};
+
+#define to_pcmcia_dev(n) container_of(n, struct pcmcia_device, dev)
+#define to_pcmcia_drv(n) container_of(n, struct pcmcia_driver, drv)
+
+
+/*
+ * CIS access.
+ *
+ * Please use the following functions to access CIS tuples:
+ * - pcmcia_get_tuple()
+ * - pcmcia_loop_tuple()
+ * - pcmcia_get_mac_from_cis()
+ *
+ * To parse a tuple_t, pcmcia_parse_tuple() exists. Its interface
+ * might change in future.
+ */
+
+/* get the very first CIS entry of type @code. Note that buf is pointer
+ * to u8 *buf; and that you need to kfree(buf) afterwards. */
+size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
+ u8 **buf);
+
+/* loop over CIS entries */
+int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
+ int (*loop_tuple) (struct pcmcia_device *p_dev,
+ tuple_t *tuple,
+ void *priv_data),
+ void *priv_data);
+
+/* get the MAC address from CISTPL_FUNCE */
+int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev,
+ struct net_device *dev);
+
+
+/* parse a tuple_t */
+int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse);
+
+/* loop CIS entries for valid configuration */
+int pcmcia_loop_config(struct pcmcia_device *p_dev,
+ int (*conf_check) (struct pcmcia_device *p_dev,
+ void *priv_data),
+ void *priv_data);
+
+/* is the device still there? */
+struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *p_dev);
+
+/* low-level interface reset */
+int pcmcia_reset_card(struct pcmcia_socket *skt);
+
+/* CIS config */
+int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val);
+int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val);
+
+/* device configuration */
+int pcmcia_request_io(struct pcmcia_device *p_dev);
+
+int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
+ irq_handler_t handler);
+
+int pcmcia_enable_device(struct pcmcia_device *p_dev);
+
+int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res,
+ unsigned int speed);
+int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res);
+int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
+ unsigned int offset);
+
+int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp);
+int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev);
+
+void pcmcia_disable_device(struct pcmcia_device *p_dev);
+
+/* IO ports */
+#define IO_DATA_PATH_WIDTH 0x18
+#define IO_DATA_PATH_WIDTH_8 0x00
+#define IO_DATA_PATH_WIDTH_16 0x08
+#define IO_DATA_PATH_WIDTH_AUTO 0x10
+
+/* IO memory */
+#define WIN_MEMORY_TYPE_CM 0x00 /* default */
+#define WIN_MEMORY_TYPE_AM 0x20 /* MAP_ATTRIB */
+#define WIN_DATA_WIDTH_8 0x00 /* default */
+#define WIN_DATA_WIDTH_16 0x02 /* MAP_16BIT */
+#define WIN_ENABLE 0x01 /* MAP_ACTIVE */
+#define WIN_USE_WAIT 0x40 /* MAP_USE_WAIT */
+
+#define WIN_FLAGS_MAP 0x63 /* MAP_ATTRIB | MAP_16BIT | MAP_ACTIVE |
+ MAP_USE_WAIT */
+#define WIN_FLAGS_REQ 0x1c /* mapping to socket->win[i]:
+ 0x04 -> 0
+ 0x08 -> 1
+ 0x0c -> 2
+ 0x10 -> 3 */
+
+/* config_reg{ister}s present for this PCMCIA device */
+#define PRESENT_OPTION 0x001
+#define PRESENT_STATUS 0x002
+#define PRESENT_PIN_REPLACE 0x004
+#define PRESENT_COPY 0x008
+#define PRESENT_EXT_STATUS 0x010
+#define PRESENT_IOBASE_0 0x020
+#define PRESENT_IOBASE_1 0x040
+#define PRESENT_IOBASE_2 0x080
+#define PRESENT_IOBASE_3 0x100
+#define PRESENT_IOSIZE 0x200
+
+/* flags to be passed to pcmcia_enable_device() */
+#define CONF_ENABLE_IRQ 0x0001
+#define CONF_ENABLE_SPKR 0x0002
+#define CONF_ENABLE_PULSE_IRQ 0x0004
+#define CONF_ENABLE_ESR 0x0008
+#define CONF_ENABLE_IOCARD 0x0010 /* auto-enabled if IO resources or IRQ
+ * (CONF_ENABLE_IRQ) in use */
+#define CONF_ENABLE_ZVCARD 0x0020
+
+/* flags used by pcmcia_loop_config() autoconfiguration */
+#define CONF_AUTO_CHECK_VCC 0x0100 /* check for matching Vcc? */
+#define CONF_AUTO_SET_VPP 0x0200 /* set Vpp? */
+#define CONF_AUTO_AUDIO 0x0400 /* enable audio line? */
+#define CONF_AUTO_SET_IO 0x0800 /* set ->resource[0,1] */
+#define CONF_AUTO_SET_IOMEM 0x1000 /* set ->resource[2] */
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_DS_H */